function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Atyeo, Warren T.', 1],
    ['Chen, Jian-Xin & Guo, Jian-Jun & Yi, Tian-Ci & Jin, Dao-Chao', 1],
    ['Corpuz-Raros, Leonila A. & Naredo, Jeremy C. B.', 1],
    ['Den Heyer, Jacob', 2],
    ['Skvarla, Michael J. & Fisher, J. Ray & Dowling, Ashley P. G.', 1],
    ['Smiley, Robert L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=7)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);